Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a41d18140e470f851f5480006714933a4eb49da1826b93af010ee1f6be8fc19' 
  AND token = 'eNYwC2Zp2FScHr4kEoJ8e6cSRaVF3vM+oEFMZQPdFv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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