Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52d257d8457a02b0a7a87c9b3f06c5bab1ec3893061b27ff53a4fc42d1380bb0' 
  AND token = '2ooqVR/BmDMddN4IWibl8vJTo9h8BR+bUWycRr45kKY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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