Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a74f0c968f2563a7fd7ff8d37f3b7f148db6e4630780de73e1a81b16e804a11' 
  AND token = 'epP5xBJyUnhPyuwSH3RG0smV9bG3naH68s/hGG+2yrM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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