Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54e43b88cdaf846806845de0c07bf825296fd2e21c420d0fda1c2d04d46a1354' 
  AND token = '5v6HqD4XBN99QsRdsx4TBFc5AWeQYBCmvxak0u6RX+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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