Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0742d56dc703344efa4fc82a9466972e0d02cdba30e1ffa4860aa6ec13dd89a1' 
  AND token = 'ZRcPJ5rZV/yybq01J2C7fCo23PdyRMCwyjrqDhtDn00=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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