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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bf2d49a77bcc57c5a37e44282aaf60d5a87127bbee11c1778b3313ad3932361' 
  AND token = '0Jl/YApxGa7RR6MMsdpTBjK3KDB+s3QDD6DWM2YwlK4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}