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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1fa258e27cd691a7899d4d84698e024f7073695a034491cf569b1acd512f63cd' 
  AND token = 'wbmX4x8U6QUM8wQsR9lTrIBZ1mofqo31HFOzaY6hHFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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