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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13a26aba58570bae9670b7df8ca7c86285d1c31ee6e37c2fec6635504973f184' 
  AND token = 'k3yFCWWXhkGvuS6EopsY/X8vZtyAdRwMK2xSuvcUj4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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