Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '152fb313e642696789df5fd139c2184dc2201779e4ba13ef96bc630588aeea5a' 
  AND token = '9qbIhrNmxay6OnXbOlZ5J6V1swHhT0bpof6jN4GQrdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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