Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cb7185cfafe714b70442ef629d1c59a8d737228b3915748471ffa6403d036f0b' 
  AND token = 'J3hlaSbKPBt8iJ+/p10f9TTajWeaXr8I2nRaBnfA9S0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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