Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a2d00ea44eb98142245597698eb8d7f5bf8dfbc6acb9882763a404636f0a1470' 
  AND token = 't4a2fGowG9tUZBfsUhrUlt6one6ZD7lPnqMaKu3g/Vs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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