Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e81ff9575657f3d9bb2aedbf5f2822f394bc66409deab162abb68124a162758b' 
  AND token = 'l2p3yLb2do7urA5gORnjVa/GlCpMYwodFEPFnaeDnmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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