Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96f5ea4f7e61e851b95fe4aa616a36aca7ef947fa60bc2b87af3171189f78d7e' 
  AND token = '5fgQWSVodhdJRiXNiL/0gPr4oJS12Gb3806pMF7gtZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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