Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60eeeb05f7be5c996a9950cb817d6d3477dbd49e763fef15137873f9924a4596' 
  AND token = 'kWACNOmQktu1QxHUtqN0XyFA7uu1PYQTMy2wxfd0fDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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