Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd8c9c074211921ff96bd06d7a343b84f723cf02eea140ebb48099fdd6799222' 
  AND token = 'r8BAayiBf02vZkuYk1aI9yjrIu+NzzalohmKTovlqss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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