Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2159e260dc6f7d265d50172c2633f764cd02cec9fc8c3528682ec6ded3ff39d4' 
  AND token = 'QBLG/uPVV+LPqyn49dy37mkL5kPbDzI2HBqfHfnZQEI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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