Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13d6f260760e6cb456e333ac7122cbd6fb2714ad9a9941e93e73da3367835ae7' 
  AND token = 'QaQruvsRAiTdbQTtcwMttNfU5LpI+aX0bh0QN0wDklU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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