Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b4500e888e2fe3364a19ac90bc202060e3301092365d8b6a403014e7983970b5' 
  AND token = 'dyk7l81A2d4MYIOT20yG093DDbH+sDddrMHsJzjohtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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