Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '136a17a025bc59907e9ad6c2b2915661a165f887aaee15365be0a1f12cc67449' 
  AND token = 'yiD1NXefBd/Wbys/+a2thpSxN9ECg3kApgziYSepG6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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