Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bcbb58f536a46230aac3d73d397f6ae5259e343f0d1398d838c1c99a1c0ae0cb' 
  AND token = 'ueG1+N/H8BPXMQco+KDKSLqaHgzydbdWkHem3iBapas=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}