Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '450642c41532977a46ec94f51c9807d9a7a37d81fc3891145a705e9afcc163d6' 
  AND token = 'd57GRajci1kD2x3VtJF5dyreF2R8ir2XOGfDU/8tZs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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