Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a82298b21b1c8551975c00b37ff713ded8aba4821c196d8a5666530a00cb62c1' 
  AND token = 'iSj5wenyTdumiXBNXfFZ4T3oqDyGCNvIbi1eRTor8MM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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