Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be79059cf6a326a1f61b8d2207b8b64d68579c2935d62a5722662112a308d697' 
  AND token = 'TMWPMSuAP/if2w2qrENoXsN5QNt7fpAo8Ck+SC27R6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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