Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f084a46feca0729510ad3bc4955fe2213df6afd5e790790c38cd588a7e89769a' 
  AND token = 'ZXk9XvInRjOc97rxdkFBJDYdS9jBWNX2JbIbgZl0yb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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