Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad068046387cb43c63082ed63e40cda78a4e86af66ec21df6b78af9e24dc653e' 
  AND token = 'K3De+5KdiPPMpWawMI8iCGGEpNhfF9Hp2xfS1sN0HUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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