SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '70d4608ef203588f1e86acf6054ffc3121afd6bfb3911e4e9fa92dea5e41754d' 
  AND token = 'ZzG0R5tv4jKiVg99ihN/Uc1WefmN51FRiLo+iU0ozGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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