Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53148d2e5eeec207d984576a438129c67fa362c548f3b23300afa77ecba29b7f' 
  AND token = '7iqm5dx9Tp2u0u/lsj3GsdZH1EsR3vdHA4HSvwnDnZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}