Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c96d2516d6e0b0faa6538dc4215183c632747ae799b7404f5dad35925ef7a76' 
  AND token = 'zDCRU6nbYqiDMN0F5EV1vfEFzgqucLuaIDAhrmm2uPg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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