Sandbox

SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '1146416b4ee960d7a72a62682130108826d62d2c5e5c2d0f5cff37cfa7c79086' 
  AND token = '0NE6Eig5CXv28sXXIv4k4rFY59wLDtuCsV96a72gPKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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