Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a8da452ac099c57e76261e024427be298867ece52fac4969376a2ac56a69e06d' 
  AND token = 'lEJaEtEvjHIFf0Zw8I9Fbkz9m4nLYabN0u5fQ7zhPXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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