Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '227422ceb948db3fc1c3470400e30566adcb742e9064311f6aa89cf366e463a7' 
  AND token = 't69JeWB8A9svJ8KWR9RmV3+YQP6Fbm4I2VIO942DsQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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