Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e969752a2a7d49b3a783c485ad9b4b8db55cd02f0229cbaff0354ea70a490bd1' 
  AND token = 'RVpFSEtOjzmXjx3rNu7R9vxWP5wV7OTIBKjnNDvJaxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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