Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd030dca809440c6fce8e9f6f949b73b2b39c9c683f440aca948bc397b0f34908' 
  AND token = 'U4V/74iaSK8gW4FJxZjgVUgZ2fY9EXRgfqczY8V7Eqg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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