Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2b2ad119072ce839034e8d000e862394e18c33828ca82e4a0303575cf06fa96' 
  AND token = '9WkEKbTXruCNtwEr2V0hXSQW92Wfqvw2SzavZzwwzi8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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