Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6d2abd5f0d79037acb7c52756ed3107f5b6efe75fa153d5b743e2b7c0504e085' 
  AND token = 'qj7HBb/k2BnJlLh5GN00FXbVId6e/RDVLBC11SsToeE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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