Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f12717a5e8c702c2b787bdb1e2147340d322444a427cbf4400e2ec828c457b77' 
  AND token = 'jhPjffZ3gZp+0Dmm8/weyiF4YiiSs1HB9k5e3fg5sy0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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