Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32924737ac6251e4604cab62cf0d3b9be90713d3b12ea610036d359583267f0' 
  AND token = '8XaoAFq3h/8aM2Kutb8KGKL3eYmsrNy0uO54DY1C+rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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