Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '13a65a72018390ffb61630184d3242ad3aa0ce6787138eaf5ee4655df65f2e49' 
  AND token = '6sWYrGNr4/tWT2Hs4exoAMcfJTj3RYVq4/DvRJa7lEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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