Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edd63cb24a7254fb3e5c820779d99f23e5d2c52e424aacb25cb8c2c3531dda87' 
  AND token = 'dpIxgSqBEorEW4/mIevEAcJ6S40plI/GcX6fGQ1aXIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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