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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86b5ed3248b49b475652cb02416ed2ce534445257b81257626ec06fa02b62c20' 
  AND token = 'UtQBln90f69A7HY/ZD7coOHkhQSX6Mf629t+fl5g2G8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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