Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e74ddbc02989daede69cf973e23e52b99ebd4d65eb1fb00d9cee4903efd08e8' 
  AND token = 'dwQxEV+6u5UH7CT+xliYuoC5vGr12FP41e9SgaiihNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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