Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a807b07065d6bb9a6dbd7da14f45135b7e961a95525f875956f13d267ca451a' 
  AND token = 'xRorUOPMelvidnotxnhi/HONaYtn+I47cJkzznVqNwY=' 
  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"
    }
  }
}