Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7a86a93aba9e887311753fc8e768d4ca54b5daaa842d9069d4afd0337e36275e' 
  AND token = 'S+F5YVK+k52ksApHDBClaPcEjaySmpA0yRSNEMEHj7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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