Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20077e1ab9496255e410c404013bf378a685a5413b0c2abf8cd7b0b14e695ac2' 
  AND token = 'MaYPeWgg9m5tONo4do3Mx2se0pvqG8y+Q4702gmwRmY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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