Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a89665d82e8dcbff986cbd5f3c95b1395469c0bc94ae37778719403bcd306d6b' 
  AND token = 'YrC7w9U+C1jwsOZw1It9xnstkYecit9o6MjstawYTNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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