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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a1e0726a56c24c6e03e2659a9ecd7d8edcf60acfcd514597634b27ceb7b4a74' 
  AND token = 'w7ydwhbtlOFza8cxezxIZ9rdSo/zg/sI3EkdJhx3Lwc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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