Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '547f116e59a1161b97a7938df56fb01d4cf209fccff18273736193ee88e73cc3' 
  AND token = 'oH+M4s4Z9PeJ0vtqPWTQLPanBRCLUS44f34Jz+TV5Ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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