Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a6a1c26e7bfb4060d15c213d235e285c7091028e38488327d19e7d4c64992f5' 
  AND token = 'wtTd/zhZw3VqSApbf230a2T2jezyuQGfhDZwRC/xJ9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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