Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0afa53cdeabbabf86e4f4b4a306b35dc738ba44377660f45adb65b4e19178c1b' 
  AND token = '/qbyvox4gj42UB2YCDRq9NF/ovAWRxb0vl1dLCfTyR8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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