Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '975004424fb8a7c194c7ba10cb684c9f7cdb081ad91b86bc69953f82798075d6' 
  AND token = 'q1DXmxwZS/bjiuAS8yIw/jb0dtcVHayxtIal3FjAJZU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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