Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bf5847ceacd057bb62eb07b2a4fe3d6318d624af4f121ac40c04452dd09c1551' 
  AND token = 'kyQORoPZI/QAC+MKJyCiF9Yye7solnLdtzSEW0AvTMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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