Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd204d88ee35902ed73f488ea650cc3c2c92e19a9ae43f98edb985c75c025b4a5' 
  AND token = 'AoJj9jOdd5gXY63Bx4nq1p2yQ8KaCzjujSxxu01hbaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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