Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe31484f37a472a36a4e542e1645691e67885feb319285d0b210159caf0462b1' 
  AND token = 'Ua4LDvXW2mJTVeaEIzXLJ2IL4Rw5ghRLPdCXqZKO6O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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