Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '215167c37b45d00f20d9afa1603117dbd167f3bc0e2d4901f250b24143fe4f01' 
  AND token = 'Z8SVB7VJVQCDUqcXAGwcaN25ZOi8JN1fGBbvJaAQr7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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