Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b063b7b801eeef5eb12de75c15f64fe884dbf2c328a1fbf50104dbf5a0c7177d' 
  AND token = 'JazAXjVp4nhY2MvqH/1ksXDTEi1+BPw+aI8rxuzhEhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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