Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '49b3e0d05182c09a57078dc49c69b8e6ffe358535b3ef91965f0f12a28744253' 
  AND token = 'fEEMYoIXuRHFa9d9VdgktR3aDScpqIIDAYhHnn3Mn7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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