Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af2d38b189991a995560e68b2d98eda7ce75d0eca26a5be5042714ce30e34808' 
  AND token = '6p4/uy3gOJu2kRvKhE2qh4C1k97S8bGx9gRkrwqH0AM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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