Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f60b8dd3b05bba7c78dbef08aa5d57a2e96764475de35ebbfaf2827eddfba5fe' 
  AND token = 'RE3PiW7pjH7DHk3Eez5Z3WBrq9p7Qm6tkDAWd44E1ok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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