Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '220c0a56c97bbf3364ac205ea87d2301f4bd2208db4775c956f21c2ddffa6e4d' 
  AND token = 'uyAZEMtxYGdeVdteQYg0mLpjp5w63EhQX1qUhQwJTqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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