Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74bf725aaa1ccf85ce59b26710cf787c12b5ec60442beb99bc2b71dad16edfe7' 
  AND token = '4/q7fNQf+1s/iHjuJtCAbtRFgClcK2yVbcd/nKDou+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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