Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02600995319ff90633cfcc994a922a2d80064aafdad0d29b10acf4586371b16d' 
  AND token = 'TVCb2ds/RDCYZERtMJtTfW/1z4As4RD0yQZ+ssVvR/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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