Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c9146a69dbc1d02b8bfef3a3ebfee916219b55503c5fab5148f493ab76a5766b' 
  AND token = '8pP5p7e10MgroD3lICen1auHWZDAmdkX9a2/9wSHS3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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