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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe2bf797c3a6e34d30ccb7c7451556e2b1acd4495351a40a9a5674fdf9f5a6ea' 
  AND token = 'Q9YOY7tXa0dvxKeOaKcWvO2gQ+lDolCZV1nbpcUCNZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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